MOTM

I use RS 1/4" to 1/8" adapters with my Pro-4.  I don't like 1/8" jacks so I
refuse to call them by their correct name :)

>Now this is some fun!

Yes :)

>I am still trying to work out how to get the Vortex "Foot controler"
>input to recognize the 320 LFO's wave as the same as the foot pedal
>moving.  I have yet to find anything in the Vortex docs that say what
>sort of voltage range that kooky thing is looking for.

I haven't had my coffee yet, so try to read this very slowly :)

Like most pedals, it is looking for 0-5V.  Afaik, it says that right in the
manual.  Otherwise, how would I know?? :)  A 320 outputs -5 to +5.  A
negative voltage won't hurt the Vortex, but it will treat it as zero -- not
what you want (unless you are using a square wave :)

Since I want to use my 320 with pedal inputs, and it is one of the main
reasons I bought it, I also bought an Oakley multimix PCB.  I already have
several mixers but they are all AC coupled.  If I normal the inputs to +5V
-- potting up that channel half way that gives +2.5V, the 320 potted up
halfway gives -2.5 to +2.5, summed gives 0-5V.

However, this would tie up the DC mixer, and I could only use one waveform
at a time.   I'm thinking of building a knobless dedicated box, on the
floor, powered from the motm.  In it I could put two circuits, each with an
inverting summing amp with 2.5V (by voltage dividing the +15 supply
voltage) and the input divided in half at it's inputs, followed by another
inverting amp, with a few mults.  This way I could use both Sine and
Triangle with my various pedal inputs (I think I have seven, but without
coffee...)

Then again, there might be a more elegant way to do this...

>One last thing. Vortex and modulars are a good union.  They go very
>well together if you are into making strange and spacey stuff.

You can also use a trigger out to flip the A/B switch by using a
gate-to-S-trigger converter, but you need to add a cap to stretch the pulse
-- I think mine uses a .1uF tantalum with a 15K resistor, but I built it
years ago and I could be wrong.  I'll open it up if you need to know. Too
large a cap and it won't work at all.